Thread parting mechanism



June 23, 1942 c. 0. BROWN 2,287,666

THREAD PARTING MECHANISM v 4 2 Sheets-Sheet 1 Filed Feb. 27, 1941 WW m W7 W W June 23, 1942.

c. D. BROWN 2,287,666 THREAD PARTING MECHANISM Filed Feb. 27, 1941 2 Sheets-Sheet 2 f* Z0 INVENTOR. CARL D. B/QOW/V.

Patented June 23, 1942 once STATS THREAD PARTING MECHANHSM Carl D. Brown, Hopedale, Mass, assignor to Draper Corporation, Hopedale, Masa, a corporation of Maine 11 Claims.

This invention pertains to automatic filling replenishing looms and more particularly relates to thread parting mechanisms therefor.

Looms of the type above referred to commonly include a reciprocating lay with a shuttle box at the replenishing end thereof, filling replenishing mechanism including a magazine containing a plurality of reserve filling carriers and a filling end holder to which the filling ends of the reserve carriers are attached, mechanism, such as a temple thread cutter for parting the filling ends adjacent the cloth selvage, and mechanism for parting the outgoing filling end adjacent the shuttle. In addition, such looms may include mechanism for removing from the loom loose pieces of filling ends formed by the parting mechanisms.

Incidental to the operation of the filling replenishing mechanism of such a loom there is formed an incoming filling endextending from the cloth selvage to the filling end holder and an outgoing filling end extending from the cloth selvage to the mechanismfor parting the outgoing filling adjacent the shuttle.

Upon operation of the temple thread cutter to sever the incoming and outgoing filling ends adjacent the cloth selvage and upon operation of the mechanism for parting the outgoing filling adjacent the shuttle, the outgoing filling end is free to fall downwardly away from the lay, or

may be removed from the 100m by the thread remover if one is provided. The incoming filling end after being severed at the cloth selvage is still attached to the filling end holder and may be caught in the moving parts of the loom, or if a thread remover is provided, cannot be completely removed from the loom by the thread remover until it is parted from the filling end holder.

Since it is essential for the proper operation of the loom that the incoming filling end remain attached to the filling holder for a plurality of picks after the operation of the replenishing mechanism, any parting of the incoming filling end from the filling end holder must be delayed for a plurality of picks after the formation thereof.

It has been proposed to position a stationary parting mechanism adjacent the filling end holder or thread guide disc so that upon rotation of the magazine the incoming filling end would be moved into the parting mechanism and parted. Such device, however, is unsatisfactory due to the occasional failure of the incoming filling end to properly enter the device, and to the fact that parting operation of the device depended upon movement of the thread against a stationary blade without any parting actuation or movement of the device itself.

Accordingly it is a principal object of the present invention to provide an automatic filling replenishing loom including a magazine adapted to hold a plurality of reserve filling carriers, a filling end holder to which the filling ends of the reserve carriers are attached, a temple thread cutter, a parting mechanism for parting the incoming filling adjacent the thread holder a plurality of picks after formation thereof and means operated by a moving part of the loom for actuating said parting mechanism.

This and other objects of the invention are accomplished in the construction illustrated onthe accompanying drawings, wherein,

Fig. 1 is a perspective view of the replenishing mechanism of an automatic loom having the preferred form of my invention applied thereto;

Fig. 2 is a plan view of the parting mechanism of my invention;

Fig. 3 is a side view of the parting mechanism shown in Fig. 2 and showing the blades in open position; and

Fig. 4 is a view similar to that of Fig. 3, but showing the blades in closed position.

The loom shown on the drawings is but fragmentarily illustrated, the parts and mechanisms not shown being of usual construction which is well known in the art and forms no part of the present invention. In addition, certain of the parts that are shown are old and well known, they being of the present invention only in that they are illustrative of parts that may be used in the combination defined in the appended claims.

The old parts include a reciprocating lay beam I having a shuttle box 2 and a reed 3 mounted thereon, a right hand side frame 4 and a breast beam 5 on which is mounted the replenishing mechanism.

The replenishing mechanism may be of any suitable usual type, the particular construction shown being of the usual rotary battery type. Only a portion of the replenishing mechanism is shown, the portion shown includes the transferrer stub shaft 6 on which is mounted the transferrer 1, magazine 8 holding a plurality of reserve filling carriers or bobbins 9, thread guide disc l8, filling end holder II to which are attached the ends of the filling on the bobbins 9 and means for rotating the magazine for successively presenting each reserve bobbin in transfer position including ratchet l2 and feed pawl A shuttle |4, carrying the filling supply is picked from side to side of the loom, along the lay beam, by suitable means which may include a picker stick |5. As the shuttle is thus picked, it lays filling thread in the shed S which filling thread is beaten into the fell of the cloth C by the reed 3. When the filling supply in the shuttle is substantially exhausted, a fresh supply is provided by the automatic replenishing mechanism.

The transfer of a bobbin 9 by the transferrer 1 to the shuttl l4 and the subsequent picking of the shuttle results in the formation of a length of filling thread which extends from the holder through the shed S. The subsequent beating in of the portion of this thread which is in the shed leaves the end 1 projecting from the cloth selvage to the holder II. This filling end is known in the art as the incoming filling end.

The operation of the replenishing mechanism results in the formation of another filling end 1" projecting from the cloth selvage to the outgoing or exhausted bobbin in the shuttle and is known as the outgoing filling end. Thus the incoming and outgoing filling ends are formed incidental to the operation of the replenishing mechanism.

The outgoing and incoming filling ends are parted adjacent the cloth selvage. For this purpose I have shown a templ l6 having the conventional thread cutter |1 therein. As is well known the temple thread cutter or selvage trimming mechanism operates to sever the incoming and outgoing filling ends a plurality of picks after the replenishing operation which formed them.

In addition to the temple thread cutter or selvage trimming mechanism I have shown the loom as equipped with parting and clamping mechanism, indicated generally at l8, for parting and clamping the outgoing filling end adjacent the outgoing filling carrier and a thread remover indicated generally at IQ, for removing from the loom the loose pieces of filling ends formed by the parting mechanisms.

The parting and clamping mechanism |8 may be similar to that described and claimed in the patent to Northrop No. 2,028,560, granted January 21, 1936 and may comprise parting and clamping blades 20 mounted on a carrier 2| which reciprocates in a guide member 22 mounted on a bracket 23 attached to the stub shaft 6. Means are provided for opening and closing the parting and clamping blades including a blade operating member 24 and a pivoted cam 25, and means are provided for moving the carrier and parting and clamping blades toward and from the shuttle box including a pin 26 mounted on carrier 2| and engaging a swinging bracket 21 pivotally mounted on stub shaft 6 and a bunter 28 adapted to be engaged by the lay, all as more fully described in the above referred to patent to Northrop.

The thread remover may be similar to the thread remover described and claimed in the copending application of Carl D. Brown et al., Serial No. 331,844, filed April 26, 2940 on which United States Letters Patent No. 2,233,373 was granted Feb. 25, 1941, and may comprise a bracket 29 fixed to stub shaft 6 and carrying a conduit 30, and a reciprocating rod 3| pivotally attached to the lay beam for feeding the loose pieces of filling ends into and along the conduit, all as more fully described in the above referred to co-pending application of Carl D. Brown et al.

The outgoing filling f is parted adjacent the shuttle eye at the time of transfer by the parting and clamping blades 20. These blades part and clamp the outgoing filling end and withdraw it from the shuttle box.

The outgoing filling end J" and the incoming filling end I are severed adjacent the cloth selvage by the temple thread cutter 11 a few picks after transfer. The reciprocating rod 3| of the thread remover catches the outgoing and incoming filling ends after they have been severed by the temple thread cutter and feeds them into and along the conduit 30. Means are provided in the conduit for preventing retrograde movements of the filling ends as the rod 3| moves. Upon release of the outgoing filling end by the parting and clamping blades 26, the loose piece of outgoing filling end is completely fed through the conduit 3|] and removed from the loom. The incoming filling end, however, has one end attached to the holder and cannot be completely fed through the conduit 3|] and removed from the loom until it has been parted or severed from the end holder II.

I provide a thread parting mechanism for parting the incoming filling end 1 adjacent the filling end holder Such mechanism may comprise a rod 32 having one end 33 adjustably mounted in an opening 34 in the upper rear end of the bracket 23 and secured thereon by set screw 35. The other end 36 of rod 32 is bent upwardly at about a 90 angle and has a member 31 slidably adjustably mounted thereon. Member 31 is secured on the end 36 of rod 32 by means of set screw 38. Member 31 has an opening therein for the reception of a rod 39. The inner end 40 of rod 39 is pivotally mounted on member 31. A collar 4| is fixedly attached to rod 39 by set screw 42 and a collar 43 is fixedly attached to rod 39 by means of a set screw 44. Collar 4| is positioned on one side of member 31 and collar 43 is positioned on the other side of member 31 thereby preventing axial movement of rod 39 relative to member 31.

Rod 39 intermediate its ends has a 90 bend upwardly and then a 90 bend rearwardly thereby causing the outer end 45 to extend rearwardly at right angles to the inner end 40. The outer end 45 of rod 39 extends rearwardly adjacent the thread guide disc IO and has a collar 46 slidably adjustably mounted thereon. A set screw 41 secures collar 46 in adjusted position.

Collar 46 has a laterally extending lug 48 formed integral therewith. Lug 48 has a pin 49 projecting therefrom adjacent its forward end and an opening therein adjacent its rear end. A threaded pin 50 is adjustably threaded into the opening in the lug 48. A leaf spring 5| is mounted on pin 50 and has a slotted end which fits over the pin 49. A fixed parting blade 53 is mounted on pin 50 and has a slotted end 54 which fits over the pin 49. A second parting blade 55 is mounted on pin 50 and has a slotted end 56 which loosely fits over the pin 49. Fixed blade 53 is longer than movable blade 55 and has a blunted upturned end 51. An actuating member 58 is pivotally mounted on pin 50 and has a forwardly and upwardly extending arm 59 and a rearwardly extending arm 66. A cam follower pin or roller 6| is mounted on the end of arm 59 and a cam follower pin or roller 62 is mounted on the end of arm 66. The outer end of arm 66 has a pair of laterally extending flanges 63 and 64 which closely embrace the cutting blade 55-tomove blade 55'when the actuatingmember 58 is moved. A spring55 is mounted on pin lladjacenttheactuating member. The leaf spring 5| and spring 55 press the blades 53 and 55' together with a pressure which may be adjusted by turning pin 50.

The cam follower pins 6| and 5-2 are resiliently heldin engagement with the outer periphery of the thread guide disc In by means of a spring 66. One end of the spring 66 is attached to the collar 43 and the other end'is attached to the member 31. The spring 65 urges the outer end of rod 39* upwardly.

The outer peripheral surface 6'! of thread guide disc H] is serrated forming a series of lands and grooves 69. The peripheral surface 5'! of guide disc ll! acts as a cam and upon rotation thereof cam followers 61 and 62 which are resiliently urged into engagement therewith ride over the lands and grooves and move the actuating member 53- which in turn moves the movable blade 55 into closed and opened position relative to fixed blade 53, thereby producing a shearing action by the blades.

The magazine 8' and the thread guide disc It] are mounted for step by step rotation by means of ratchet l2 and pawl l3 upon each operation of the replenishing mechanism in orderto successively bring each reserve bobbin into transfer position.

The peripheral surface 6'! of the thread guide disc Ill is provided with an equal number of grooves 59 as there are bobbins in the magazine, the number usually being 26 or 28. Accordingly upon each operation of the replenishing mechanism, themagazine and with it the thread guide disc makes /26 or /28 of a revolution depending upon the bob-bin capacity of the magazine.

The cam followers BI and 62 are spaced apart a predetermined distance and so positioned relative to the peripheral surface 6'? of the thread guide disc Ill that upon each rotative movement of the thread guide disc (due to operation of the replenishing mechanism) the movable blade 55 will be moved from open position as'shown on Fig. 3 to closed position as shown on Fig. 4 and back to the open position of Fig. 3. This cycle of movement of the movable blade occurs upon each rotative movement of the thread guide disc.

The operation of the device is as follows; assuming that the battery has a capacity of 28 reserve bobbins (as shown on the drawings). Thus upon each operation of the replenishing mechanism the battery and thread guide disc are rotated through /23 of a revolution.

Assume the status of the operation of the loom to be as follows: A replenishing operation has just occurred. The incoming filling end i (as seen on Fig. 3) which was formed by the replenishing operation has been moved by the rotation of the thread guide disc into position between the open blades. The filling end i which extends from the bobbin next to be transferred to the end holder will be in the position shown on Fig. 3. The incoming filling end I upon being severed b the temple thread cutter drops onto the reciprocating rod of the thread remover and is fed into the conduit, thus the incoming filling end I extends from the end holder ll between the blades 53 and 55 and into the conduit 30. The incoming filling end f is held in this position until the next operation of the replenishing mechanism. Upon the next operation of the replenishing mechanism the thread guide disc makes /28 of a revolution, this movement of the guide disc will first cause the movable blade 55 to close parting the incoming filling end (asshown on Fig. 4) and then to open to receive the newly formed filling end which will be the filling end f Thus each newly formed incoming filling end is parted adjacent the thread guide disc on the next succeeding operation of the replenishing mechanism after the operation forming it, in other words a plurality of picks after the formation thereof.

Having thus fully disclosed the preferred embodiment of my invention. I claim- 1. In an automatic filling replenishing loom of the type incidentally forming incoming and outgoing filling ends and having a temple thread cutter, the combination of a magazine assembly adapted to hold a plurality of reserve filling carriers and having a holder to which the ends of the filling on said reserve filling carriers are attached and movable means actuated by a movingpart of the magazine assembly for parting each successive incomin filling end adjacent said holder a plurality of picks after formation thereof.

2. In an automatic filling replenishing m ofthe type incidentally forming incoming and outgoing fillin ends, the combination of a magazine adapted to hold at least one reserve filling carrier and movable means actuated by a moving part of the magazine for parting each successive incoming filling endadjacent said magazinea plurality of picks after formation thereof.

3. In an automatic replenishing loom of the type incidentally forming incoming and outgoing filling ends, the combination of a movable magazine containing a plurality of reserve filling carriers, means for moving said magazine to successively present said reserve filling carriers in position for transfer, parting means mounted on said loom and positioned in front of said magazine for parting each successive incoming filling end, said parting means comprising a fixed blade and a movable blade, cam means mounted on said movable blade and a member mounted on said magazine and movable therewith, said member engaging said cam means, said cam means and said member being so constructed and arranged that upon each movement of said magazine to bring a reserve filling carrier into transfer position said parting means are closed to part the existing incoming filling end and opened to receive the newly formed incoming filling end.

4. In an automatic replenishing loom of the type incidentally forming incoming and outgoing filling ends and including means for parting said filling ends adjacent the cloth selvage, the combination of a movable magazine containing a plurality of reserve filling carriers, means for moving said magazine to successively present said filling carriers in position for transfer, cam means mounted on said magazine for movement therewith, parting mechanism for parting each successive incoming filling end adjacent said magazine a plurality of picks after formation thereof and cam follower means mounted on said parting mechanism and engaging said cam means, said cam means and said cam follower means being so constructed and arranged that upon each movement of said magazine to present a reserve filling carrier in transfer position said parting mechanism is closed to part the existing incoming filling end and opened to receive the newly formed incoming filling end.

5. In an automatic replenishin loom of the type incidentally forming incoming and outgoing filling ends and including parting means for parting said filling ends adjacent the cloth selvage, the combination of a rotary magazine containing a plurality of reserve filling carriers and including a thread guide disc having a serrated periphery, means for rotating said magazine to successively present said filling carriers in position for transfer and a parting mechanism for parting each successive incoming filling end adjacent said thread guide disc, said mechanism comprising a movable blade and a fixed blade, a pair of spaced apart rollers mounted on said movable blade and resilient means for urging said rollers into engagement with said serrated periphery of said guide disc, said rollers and said serrated periphery being so constructed and arranged that upon each rotative movement of said disc said parting means are closed to part the existing incoming filling end and opened to receive the newly formed incoming filling end.

6. In an automatic filling replenishing loom having a magazine assembly for reserve filling carriers including a thread guide disc and a filling end holder, means for transferring successive reserve filling carriers from the magazine assembly to a shuttle, and means operated by a movin part of the magazine assembly for parting each filling end after transfer of the filling carrier to which it is attached.

7. In an automatic filling replenishing loom having a magazine assembly for reserve filling carriers including a means for holding the ends of filling extending from the carriers, and means for transferring successive reserve filling carriers from the magazine assembly to a shuttle, means operated by a moving part of the magazine assembly for parting each filling end a plurality of picks after transfer of the filling carrier to which it is attached.

8. In an automatic filling replenishing loom having a magazine assembly mounted on one side thereof, said assembly including a retainer for reserve filling carriers, a thread guide disc positioned outwardly therefrom and means for holding filling ends which extend from the reserve filling carriers, a parting means placed adjacent said thread guide disc and operated thereby for successively parting the said filling ends.

9. In an automatic filling replenishing loom having a magazine assembly including a retainer for reserve filling carriers, a thread guide disc and means for holding filling ends which extend from the filling carriers and over the said disc, a parting means placed at said disc and operated thereby for successively parting the filling ends attached to the said holding means.

10. In an automatic filling replenishing loom having a magazine assembly including a retainer for reserve filling carriers, a thread guide disc and a holding means for filling ends which extend from the reserve filling carriers, a parting means operated by a moving part of the magazine assembly for successively parting said filling ends at a point between the said retainer and the said holding means.

11. In an automatic filling replenishing loom having a magazine assembly including a retainer for reserve filling carriers, a thread guide disc and a means for holding filling ends which extend from the reserve filling carriers, and means for transferring successive filling carrier from the said retainer to a shuttle, a serrated periphery on said guide disc, a parting means placed adjacent said disc and having a movable part engaging the serrated periphery whereby, upon operation of the magazine assembly, the parting means is operated to part a filling end attached to said holding means.

CARL D. BROWN. 

